Probing Strangeness via Charm Production in Charged Current DIS at HERA

摘要

We present an overview of an ongoing analysis at HERA on charm production at high Q~2 charged current DIS. The measurements taken after the HERA shutdown period are categorized as HERA II data. In order to fully exploit the improvements made during this period, this analysis only considers HERA II data. The improvements include a higher luminosity and enhanced heavy particle identification capabifities and are discussed in the present paper. Secondary vertices are extracted in order to distinguish charm production events in charged current DIS. The significance of the decay length associated with each secondary vertex is used to discriminate charm events from fight flavor events. Event selection criteria from previous analyses as well as the expected number of surviving events are presented.